
© by SEMIKRON / 2019-07-23 / Technical Explanation / SKYPER
®
42 LJ R
PROMGT.1026/ Rev.7/ Template Technical Explanation
Page 9/35
3.3
Support post
To increase the mechanical connection between the SKYPER
42 LJ R driver and the adapter board, up to
two support posts could be additionally assembled. It is recommended to use at least one support post. If a
support post is used, make sure it has the correct length. A support post which is too short bends both the
driver and the adapter board when mounted, thus increasing mechanical stress. If the support post is too
long, the mating connectors may not fully support the pin header.
The mounting holes of the support post are located in the insulation area between the secondary sides of
the driver. To avoid reduction of creepage and clearance distances when utilizing such a support post, the
support posts must have a CTI 600 classification at least.
Example of a support post:
Description
Shape
Manufacturer
Art. no.
Nylon support post
Dual lock
Richco
DLMSPM-8-01 (>12mm)
Figure 6: SKYPER
®
42 LJ R | Support post
mounting holes for support posts
draft of a supported driver on an adapter board
3.4
Solder connection
The SKYPER
®
42 LJ R driver core can be soldered directly onto an adapter or control board. It should be
noted that if the driver is placed too close to the adapter or control board, the clearance distances from the
driver’s primary to secondary side as well as the clearance distances between the secondary sides may be
reduced.
Soldering hints
•
The solder’s temperature must not exceed 260°C and the solder time must not exceed 10 seconds.
•
The ambient temperature must not exceed the specified maximum storage temperature of the driver.
•
The solder joints should be in accordance to IPC A 610 Revision D (or later) - Class 3 (Acceptability of
Electronic Assemblies) to ensure an optimum connection between driver core and printed circuit
board.
•
The driver is not suited for hot air, reflow or infrared reflow processes.